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selftests/mm: map_hugetlb: conform test to TAP format output

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Conform the layout, informational and status messages to TAP.  No
functional change is intended other than the layout of output messages.

Link: https://lkml.kernel.org/r/20240202113119.2047740-3-usama.anjum@collabora.com
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Muhammad Usama Anjum 2024-02-02 16:31:09 +05:00 committed by Andrew Morton
parent 4838cf70e5
commit d1e7bf2c70
1 changed files with 20 additions and 22 deletions
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42
tools/testing/selftests/mm/map_hugetlb.c
View File

@ -16,6 +16,7 @@
#include <sys/mman.h> #include <sys/mman.h>
#include <fcntl.h> #include <fcntl.h>
#include "vm_util.h" #include "vm_util.h"
#include "../kselftest.h"
#define LENGTH (256UL*1024*1024) #define LENGTH (256UL*1024*1024)
#define PROTECTION (PROT_READ | PROT_WRITE) #define PROTECTION (PROT_READ | PROT_WRITE)
@ -31,7 +32,7 @@
static void check_bytes(char *addr) static void check_bytes(char *addr)
{ {
printf("First hex is %x\n", *((unsigned int *)addr)); ksft_print_msg("First hex is %x\n", *((unsigned int *)addr));
} }
static void write_bytes(char *addr, size_t length) static void write_bytes(char *addr, size_t length)
@ -42,23 +43,21 @@ static void write_bytes(char *addr, size_t length)
*(addr + i) = (char)i; *(addr + i) = (char)i;
} }
static int read_bytes(char *addr, size_t length) static void read_bytes(char *addr, size_t length)
{ {
unsigned long i; unsigned long i;
check_bytes(addr); check_bytes(addr);
for (i = 0; i < length; i++) for (i = 0; i < length; i++)
if (*(addr + i) != (char)i) { if (*(addr + i) != (char)i)
printf("Mismatch at %lu\n", i); ksft_exit_fail_msg("Mismatch at %lu\n", i);
return 1;
} ksft_test_result_pass("Read correct data\n");
return 0;
} }
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
void *addr; void *addr;
int ret;
size_t hugepage_size; size_t hugepage_size;
size_t length = LENGTH; size_t length = LENGTH;
int flags = FLAGS; int flags = FLAGS;
@ -69,6 +68,9 @@ int main(int argc, char **argv)
if (hugepage_size > length) if (hugepage_size > length)
length = hugepage_size; length = hugepage_size;
ksft_print_header();
ksft_set_plan(1);
if (argc > 1) if (argc > 1)
length = atol(argv[1]) << 20; length = atol(argv[1]) << 20;
if (argc > 2) { if (argc > 2) {
@ -78,27 +80,23 @@ int main(int argc, char **argv)
} }
if (shift) if (shift)
printf("%u kB hugepages\n", 1 << (shift - 10)); ksft_print_msg("%u kB hugepages\n", 1 << (shift - 10));
else else
printf("Default size hugepages\n"); ksft_print_msg("Default size hugepages\n");
printf("Mapping %lu Mbytes\n", (unsigned long)length >> 20); ksft_print_msg("Mapping %lu Mbytes\n", (unsigned long)length >> 20);
addr = mmap(ADDR, length, PROTECTION, flags, -1, 0); addr = mmap(ADDR, length, PROTECTION, flags, -1, 0);
if (addr == MAP_FAILED) { if (addr == MAP_FAILED)
perror("mmap"); ksft_exit_fail_msg("mmap: %s\n", strerror(errno));
exit(1);
}
printf("Returned address is %p\n", addr); ksft_print_msg("Returned address is %p\n", addr);
check_bytes(addr); check_bytes(addr);
write_bytes(addr, length); write_bytes(addr, length);
ret = read_bytes(addr, length); read_bytes(addr, length);
/* munmap() length of MAP_HUGETLB memory must be hugepage aligned */ /* munmap() length of MAP_HUGETLB memory must be hugepage aligned */
if (munmap(addr, length)) { if (munmap(addr, length))
perror("munmap"); ksft_exit_fail_msg("munmap: %s\n", strerror(errno));
exit(1);
}
return ret; ksft_finished();
} }